This teacher would have the eraser in his hand and then use his sleave on the other hand to erase the board! Not so good a teacher, but was pretty nice.
Aye, he did seem to get full of chalk, but I think he was the best math teacher I've ever had, and learned a ton from him, which I still remember even!
I liked him, very funny but not so bright when it came to math. Some kids had trouble. He liked chalk a lot.